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target-or32: Add system instructions
Add OpenRISC system instructions.
Signed-off-by: Jia Liu <proljc@gmail.com>Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
target-or32: Add float instruction helpers
Add OpenRISC float instruction helpers.
target-or32: Add int instruction helpers
Add OpenRISC int instruction helpers.
target-or32: Add exception support
Add OpenRISC exception support.
target-or32: Add interrupt support
Add OpenRISC interrupt support.
target-or32: Add target stubs and QOM cpu
Add OpenRISC target stubs, QOM cpu and basic machine.